i have an 04 2wd supercab, i'm putting the kmc xd series rockstars in 20x8.5 ,they have 5.14" of backspace and 10mm 0ffset. i want to put nitto terra grapplers on the rims. what is the biggest tg that will fit with a 2.5" leveling kit with little to no rubbing?

 

I'm not positive, but you may be able to fit a 305/50-20 (32x12.50).